Offering two distinct ways to hit your favorite riding zone, Marin's Dirt Jump series has the right tool for the job. With a stout, butted 4130 cromoly frame and custom FSA parts the Alcatraz offers pure park flow. The San Quentin expands the limits with a versatile 1 x 8 drivetrain that can go from the park to the trail or the slalom course. A reinforced, double butted 6061 frame sheds weight for throwing tricks or sprinting for the gates.